Rocker Arm Shaft Automatic Finishing and Inspection Device

Abstract

The present invention relates to an automatic finishing and inspection device for a rocker arm shaft that can sequentially and automatically perform finishing and inspection of the overall length, inner diameter, and tap position of a rocker arm shaft having a predetermined length. To solve the above problem, the automatic finishing and inspection device for a rocker arm shaft according to the present invention comprises a frame part; a supply part; a transfer part; a position alignment part; a first finishing part; a second finishing part; an inner diameter inspection part, an overall length inspection part; a foreign matter removal part; a sorting part; a discharge part; and a control part, wherein finishing processing of the axial hole and the hole perpendicular to the axis of the rocker arm shaft, and inspection of the overall length and the inner diameter of the axial hole of the rocker arm shaft are sequentially performed.

Description

Technology Field

[0001] The present invention relates to an automatic finishing and inspection device for a rocker arm shaft, and more specifically, to an automatic finishing and inspection device for a rocker arm shaft having a predetermined length, which automatically performs finishing and inspection such as overall length, inner diameter, position (position deviation), and tap inspection. Background Technology

[0002] In the case of a rocker arm shaft in which a hole of a predetermined diameter is formed to communicate with both sides and a plurality of tap holes are formed at predetermined intervals along the length, defects are selected by sequentially inspecting the overall length (total length) of the rocker arm shaft manufactured through the production process, the inner diameter finishing and inspection of the hole, and the tap position and spacing inspection.

[0003] However, conventionally, the overall length, inner diameter, position (position deviation), and tap inspection of the rocker arm shaft are performed manually by workers, and as a result, there is a problem that it takes a long time and a large workforce to sort out defective products.

[0004] As described above, various types of automation devices are being developed to solve problems that occur during the finishing and inspection processes after product manufacturing. As a prior art for this purpose, the smart vision system for automatic finishing and inspection disclosed in Korean Patent Publication No. 2025-0001237 (hereinafter referred to as the 'Patent Document') is disclosed.

[0005] The above patent document comprises: a loading unit for supplying a material to be materialized; a material materializing unit for removing gates and burrs from the supplied material to be materialized; an inspection unit for performing vision inspection on the material material materialized through the material materializing unit to determine whether it is defective; and a discharge unit for discharging the material material after inspection is completed.

[0006] However, the above patent document includes a finishing operation to remove gates and burrs remaining on the product and an inspection unit that inspects defects through vision inspection, but there is a problem in that it is difficult to perform various finishing and inspection operations such as overall length, inner diameter, position (position deviation), and tap inspection, such as with a rocker arm shaft.

[0007] Therefore, there is a need to develop a finishing and inspection device with an improved structure that can automatically perform overall length, inner diameter, position (position deviation), and tap inspection using a single device, tailored to the rocker arm shaft. Prior art literature

[0008] KR 10-2025-0001237 A (2025. 01. 06)KR 10-2934956 B1 (2026. 03. 03.)KR 10-1286999 B1 (2013. 07. 11.) The problem to be solved

[0009] The present invention was devised to solve the problems of the conventional rocker arm shaft finishing and inspection method as described above. The problem to be solved by the present invention is to provide an automatic rocker arm shaft finishing and inspection device capable of sequentially and automatically performing finishing and inspection of the overall length, inner diameter, and tap position of a rocker arm shaft having a predetermined length. means of solving the problem

[0010] An automatic finishing and inspection device for a rocker arm shaft according to the present invention for solving the above problem comprises: a square box-shaped frame portion having a predetermined size; a supply portion located on one side of the frame portion for sequentially supplying a rocker arm shaft; a transfer portion installed horizontally along the length on the upper part of the frame portion for transferring the rocker arm shaft supplied through the supply portion in units of a predetermined distance; a position alignment portion installed on one side of the upper part of the frame portion for aligning the position of the rocker arm shaft transferred through the transfer portion; a first finishing portion installed at a predetermined distance from one side of the position alignment portion for finishing the inner diameter of an axial hole of the rocker arm shaft transferred in units of a predetermined distance through the transfer portion; and a second finishing portion installed at a predetermined distance from the upper part of the transfer portion in accordance with the position of the first finishing portion for finishing the inner diameter of an axial hole of the rocker arm shaft. An inner diameter inspection unit installed on the upper part of the frame portion and inspecting the axial inner diameter of the rocker arm shaft that is conveyed through the conveying unit and passes through the first and second finishing units; an overall length inspection unit installed on the upper part of the frame portion and inspecting the overall length of the rocker arm shaft that is conveyed through the conveying unit and passes through the inner diameter inspection unit; a foreign matter removal unit installed on the upper part of the frame portion and removing foreign matter inside the axial hole of the rocker arm shaft that is conveyed through the conveying unit and passes through the overall length inspection unit using high-pressure air; a sorting unit provided on the other side of the upper part of the frame portion and selecting and discharging defective rocker arm shafts that have passed through the foreign matter removal unit; and a discharge unit provided on the other side of the frame portion and discharging good quality rocker arm shafts that have passed through the sorting unit.The method is characterized by including a control unit that controls the operation of the supply unit, transfer unit, position alignment unit, first finishing unit, second finishing unit, inner diameter inspection unit, full length inspection unit, foreign matter removal unit, and sorting unit, wherein the finishing processing of the axial hole and the hole perpendicular to the axis of the rocker arm shaft, and the inspection of the full length and the inner diameter of the axial hole of the rocker arm shaft are performed sequentially.

[0011] In addition, another feature of the present invention is that the first shaping part is installed such that two parts, one at each end of the rocker arm shaft, face each other.

[0012] In addition, another feature of the present invention is that the first finishing portion is installed such that four portions, two at each end of the rocker arm shaft, face each other, so that the axial inner diameter of the rocker arm shaft is finished in two stages.

[0013] In addition, the supply unit of the present invention is further characterized by comprising: a main body having a predetermined size; a supply plate installed on one side of the main body with one end inclined downward at a predetermined angle; a plurality of support plates installed on the main body and positioned on one end of the supply plate to form a stepped step of a predetermined height; a plurality of lifting plates installed between the plurality of support plates to contact one side of the support plate and moving up and down to a predetermined height to sequentially raise the rocker arm shaft located on one end of the supply plate; an air cylinder installed inside the main body to raise the lifting plate; and a discharge plate provided on the other side of the upper part of the main body to discharge individual rocker arm shafts raised stepwise along the support plate through the lifting plate toward the transfer unit. Effects of the invention

[0014] According to the present invention, when a rocker arm shaft having a predetermined length is sequentially supplied to a conveying unit through a supply unit, the first and second finishing processes, full length inspection, inner diameter inspection, washing, and sorting processes are automatically carried out during the process of sequentially moving at predetermined intervals by the conveying unit. This has the advantage of reducing the time and manpower required for the work while improving the accuracy of the finishing and inspection work compared to performing finishing and inspection work manually. Brief explanation of the drawing

[0015] FIG. 1 is a drawing showing an example of an automatic rocker arm shaft finishing and inspection device according to the present invention. FIG. 2 is a plan view of FIG. 1. FIG. 3 is a drawing showing an example of a supply unit according to the present invention. FIG. 4 and FIG. 5 are drawings showing examples of a transfer unit according to the present invention. FIG. 6 (a, b) is a drawing showing an example of a position alignment unit according to the present invention. FIG. 7 is a drawing showing an example of a first finishing unit according to the present invention. FIG. 8 (a, b) is a drawing showing an example of a second finishing unit according to the present invention. FIG. 9 is a drawing showing an example of an inner diameter inspection unit according to the present invention. FIG. 10 is a drawing showing an example of an electrical length inspection unit according to the present invention. FIG. 11 is a drawing showing an example of a foreign substance removal unit according to the present invention. FIG. 12 is a drawing showing an example of a sorting unit according to the present invention. Specific details for implementing the invention

[0016] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0017] The present invention aims to provide an automatic finishing and inspection device for a rocker arm shaft that can sequentially and automatically perform finishing and inspection of the overall length, inner diameter, and tap position of a rocker arm shaft having a predetermined length. To this end, the present invention includes, as shown in FIG. 1, a frame part (10), a supply part (20), a transfer part (30), a position alignment part (40), a first finishing part (50), a second finishing part (60), an inner diameter inspection part (70), an overall length inspection part (80), a foreign matter removal part (90), a sorting part (100), a discharge part (110), and a control part (120).

[0018] The frame section (10) is formed by connecting profiles with a square cross-section having a predetermined length in horizontal and vertical directions to form a square box shape having a predetermined size, and the transfer section (30), position alignment section (40), first finishing section (50), second finishing section (60), inner diameter inspection section (70), full length inspection section (80), foreign matter removal section (90), sorting section (100), discharge section (110), and control section (120), which will be described later, are installed in this frame section (10) and fixed in position.

[0019] And, a plurality of control valves (not shown in the drawing) for supplying hydraulic pressure to various transfer cylinders described later may be installed inside the frame part (10).

[0020] Additionally, a pair of installation plates (11) are installed on both upper sides of the frame part (10) to have a predetermined height along the length, and through holes (not shown in the drawing) of a predetermined diameter are formed at predetermined intervals in the pair of installation plates (11) to match the positions of the position alignment part (40), the first finishing part (50), the second finishing part (60), the inner diameter inspection part (70), the full length inspection part (80), the foreign matter removal part (90), and the sorting part (100) described later.

[0021] In addition, a mounting plate (12) having a "V" shaped mounting groove (not shown) aligned with the position of a through hole is installed on one side of a pair of mounting plates (11) facing each other, and a rocker arm shaft (1) transported through a transport unit (30) is sequentially mounted in the mounting groove of the mounting plate (12).

[0022] The supply unit (20) is located on one side of the frame unit (10) and is configured to store the rocker arm shaft (1) and to supply the stored rocker arm shaft (1) individually to the transfer unit (30) described later.

[0023] As shown in FIG. 3, this supply unit (20) includes a main body (21) having a predetermined size, a supply plate (22) installed on one side of the main body (21) with one end inclined downward at a predetermined angle, a plurality of support plates (23) installed on the main body (21) to form a stepped step, a lifting plate (24) installed between the plurality of support plates (23) to sequentially raise a rocker arm shaft (1), an air cylinder (25) installed inside the main body (21) to raise and lower the lifting plate (24), and a discharge plate (26) provided on the other side of the upper part of the main body (21) to discharge individual rocker arm shafts (1) that have been raised stepwise along the support plates (23) through the lifting plate (24) toward the transfer unit (30).

[0024] At this time, the support plate (23) is formed into a stepped shape overall by including a pair of first support plates (23A) installed at a predetermined distance from each other as shown in FIG. 3, a pair of second support plates (23B) installed at a predetermined distance from each other while positioned at a position relatively higher than the first support plates (23A), a pair of third support plates (23C) installed at a predetermined distance from each other while positioned at a position relatively higher than the second support plates (23B), and a fourth support plate (23D) located at a position relatively higher than the third support plates (23C).

[0025] And the lifting plate (24) includes a first lifting plate (24A) installed between the first support plates (23A), a second lifting plate (24B) installed between the second support plates (23B), and a third lifting plate (24C) installed between the third support plates (23C).

[0026] In addition, the lower ends of the first, second, and third lifting plates (24A, 24B, 24C) are connected to the rod of the air cylinder (25), and by this, the rod of the air cylinder (25) moves in and out in the up and down direction, thereby causing the first, second, and third lifting plates (24A, 24B, 24C) to be raised and lowered simultaneously.

[0027] Through the above configuration, when the first, second, and third lifting plates (24A, 24B, 24C) are in a lowered state, their upper surfaces align with the upper surfaces of the first, second, and third support plates (23A, 23B, 23C). Consequently, when the rocker arm shaft (1) moves toward the first support plate (23A) via the supply plate (22), it is raised and moved toward the second support plate (23B) by the first lifting plate (24A). Subsequently, in the same manner, the rocker arm shaft (1) located on the second support plate (23B) is raised and moved toward the third support plate (23C) by the second lifting plate (24B). Then, the rocker arm shaft (1) located on the third support plate (23C) is moved toward the discharge plate (26) by the third lifting plate (24C) over the fourth support plate (23D), and as a result Individual rocker arm shafts (1) are sequentially supplied to the transfer unit (30) described later.

[0028] The transfer unit (30) is installed horizontally along the length of the upper part of the frame unit (10) and is configured to sequentially move individual rocker arm shafts (1) supplied through the discharge plate (26) of the supply unit (20) at predetermined intervals.

[0029] As shown in FIG. 4, this transfer unit (30) includes a pair of linear guides (31) installed at a predetermined interval, a support plate (32) installed on the transfer block (31A) of the linear guide (31), a lifting cylinder (33) installed on the support plate (32) to allow the rod to be moved in and out in the vertical direction, a transfer plate (34) with an open upper surface and a "C" shaped cross-section installed on the rod of the lifting cylinder (33) to be moved up and down, and a servo motor (35) that reciprocates the support plate (32) in the horizontal direction.

[0030] At this time, the support plate (32) includes a bottom plate (32A) of a predetermined size installed on a transfer block (31A) as shown in FIG. 5, a pair of side plates (32B) installed vertically on both upper surfaces of the bottom plate (32A) to have a predetermined height, a linear guide (32C) of a predetermined length installed on one side of the pair of side plates (32B) facing each other to have a length in the vertical direction, and a transfer block (32D) installed on the linear guide (32C) and coupled to the side of the transfer plate (34) while sliding in the vertical direction.

[0031] And a "V" shaped seating groove (34A) is formed at a predetermined interval on the upper part of the transfer plate (34), and the rocker arm shaft (1) is seated in the seating groove (34A) and transferred.

[0032] In the transfer unit (30) configured as described above, when a single rocker arm shaft (1) is supplied to the upper end of the transfer unit (30) through the discharge plate (26), the support plate (32) is moved a predetermined distance toward the supply unit (20) through the servo motor (35), and then the transfer plate (34) is raised to a predetermined height by the lifting cylinder (33), so that the single rocker arm shaft (1) located at the front end of the discharge plate (26) is seated in the seating groove (34A) of the transfer plate (34) and rises together.

[0033] In this state, the servo motor (35) is operated to return the support plate (32) to its original position while it is seated in the seating groove (34A) of the transfer plate (34), and then the lifting cylinder (33) is lowered so that the transfer plate (34) is lowered, and the rocker arm shaft (1) is seated in the seating groove of the seating plate (12) installed to match the position of the through hole formed in the installation frame (11) of the frame part (10), and is separated from the transfer plate (34).

[0034] That is, the transfer plate (34) is horizontally transferred a predetermined distance and then vertically raised, and then horizontally transferred again a predetermined distance to return to its position and then vertically lowered, and this operation is repeated, and through this operation, the rocker arm shaft (1) is transferred step by step toward the discharge part (110) described later, by the distance the transfer plate (34) is reciprocated in the horizontal direction.

[0035] The position alignment unit (40) is installed on one side of the upper part of the frame unit (10) and is configured to align the position of the rocker arm shaft (1) transferred through the transfer unit (30).

[0036] As shown in FIG. 6(a, b), the position alignment unit (40) includes a bracket installed on one side installation frame (11), a first transfer cylinder (41) installed on the upper surface of the bracket to be reciprocated in a horizontal direction perpendicular to the transfer direction of the transfer unit (30), a servo motor (42) installed to be reciprocated through the first transfer cylinder (41), an air clamp (43) installed on the rotation axis (not shown) of the servo motor (42) to selectively grip and release one end of the rocker arm shaft (1) by pneumatic pressure, a second transfer cylinder (44) installed on the other side installation frame (11), and a guide pin (45) that is reciprocated sliding in the axial direction of the rocker arm shaft (1) by the second transfer cylinder (44) to rotatably fix the other end of the rocker arm shaft (1).

[0037] In addition, a plurality of distance sensors (not shown) are installed at the positions of the tap holes (not shown) formed at predetermined intervals along the length of the rocker arm shaft (1) on the upper part of the position alignment unit (40) to align the position of the rocker arm shaft (1).

[0038] At this time, the distance sensor can be installed on one side of the second shaping part (50) described later through a separate bracket (not shown).

[0039] When the rocker arm shaft (1) is transported through the transport unit (30) and the rocker arm shaft (1) is placed on the mounting plate (12) on the position alignment unit (40), the position alignment unit (40) is pressed against both ends of the rocker arm shaft (1) by the first and second transport cylinders (41, 44), and then, while the rocker arm shaft (1) is held by the air clamp (43), the servo motor (42) is operated so that the rocker arm shaft (1) rotates at a predetermined speed together with the air clamp (43).

[0040] While the rocker arm shaft (1) is rotating at a predetermined speed, a laser is irradiated downward vertically through a distance sensor to measure the distance between the outer surfaces of the rocker arm shaft (1). During this process, when the laser is irradiated into a tap hole formed on the outer surface of the rocker arm shaft (1) and detected to be greater than a preset distance, the rotation of the servo motor (42) is stopped, and then the fixation of the rocker arm shaft (1) by the air clamp (43) is released, and the position alignment is completed.

[0041] The first finishing unit (50) finishes the inner diameter of a hole formed in the axial direction of the rocker arm shaft (1) when the rocker arm shaft (1), whose position is aligned through the position alignment unit (40), is transported through the transport unit (30) and placed on the seating plate (12).

[0042] As shown in FIG. 7, this first shaping unit (50) includes a base plate (51) having a predetermined length in the horizontal direction, a linear guide (52) installed along the length on the upper surface of the base plate (51), a motor (53) installed on the transfer block (52A) of the linear guide (52), and a drill bit (54) of a predetermined length that is detachably installed on a drill chuck (not a reference numeral) installed on the rotation axis (not a reference numeral) of the motor (53).

[0043] The first finishing section (50) as described above may be installed one on each side of the installation plate (11) at a predetermined interval in accordance with the transfer interval of the transfer section (30), or alternatively, as shown in FIG. 2, a total of four first finishing sections (50) may be installed so that two of each first finishing section (50) face each other on each side of the installation plate (11), thereby allowing the inner diameter of the axial hole of the rocker arm shaft (1) to be finished more precisely in two steps.

[0044] The second finishing section (60) is configured to finish the inner diameter of a hole (tap hole) formed perpendicular to the axis of the rocker arm shaft (1) while the inner diameter of the axial hole of the rocker arm shaft (1) is finished through the first finishing section (50).

[0045] As shown in FIGS. 1 and FIGS. 8 (a, b), this second shaping section (60) includes a vertical plate (61) of a predetermined width having a predetermined height vertically, a first cylinder (62) installed on the upper side of the vertical plate (61) so that a rod is vertically drawn in and out, a linear guide (63) of a predetermined length installed on the lower side of the vertical plate (61) so that it has a vertical length, a second cylinder (64) installed on a transfer block (not shown in the drawing) of the linear guide (62) and transferred in the vertical direction by the first cylinder (62), and a fixed bracket (65) of a predetermined length installed on the rod of the second cylinder (64).

[0046] At this time, the fixed bracket (65) is formed to have a predetermined length in the horizontal direction so as to be parallel to the rocker arm shaft (1), and a plurality of drill pins (65A) are installed at predetermined intervals on the fixed bracket (65).

[0047] The second finishing unit (60) configured as described above is configured such that while the inner diameter of the axial hole of the rocker arm shaft (1) is being finished by the first finishing unit (50), the first cylinder (62) is lowered so that the outer surface of the rocker arm shaft (1) is pressed and fixed by the fixing bracket (65), thereby preventing the rocker arm shaft (1) from rotating arbitrarily or deviating from its position while being finished.

[0048] Additionally, the second cylinder (64) is lowered so that the drill pin (65A) of the fixed bracket (65) is pressed into the hole (tap hole) formed perpendicular to the axis along the length of the rocker arm shaft (1), thereby causing the inner diameter of the hole perpendicular to the axis of the rocker arm shaft (1) to be finished.

[0049] The inner diameter inspection unit (70) is installed on the upper part of the frame unit (10) and is configured to inspect the axial inner diameter of the rocker arm shaft (1) that is transported through the transport unit (30) and passes through the first and second finishing units (50, 60).

[0050] As shown in FIG. 9, this internal diameter inspection unit (70) includes a pair of fixed plates (71) installed symmetrically to each other to have a predetermined length in the horizontal direction at the lower part of both guide plates (11), a pair of transfer units (72) installed on the fixed plates and transferred in the up-down and forward-backward directions (axial direction of the rocker arm shaft (1)), an installation block (73) of a predetermined size installed on each of the transfer units (72), and a pair of air gauges (74) installed on the installation blocks (73) and facing each other toward both ends of the rocker arm shaft (1).

[0051] It also includes a support plate (75) of a predetermined length installed to connect the upper part of the guide plate (11) in a horizontal direction, a lifting cylinder (76) of a predetermined size installed in an up-and-down vertical direction in the middle part of the support plate (75), and a guide block (77) of a predetermined size installed on the rod (not shown in the drawing) of the lifting cylinder (76) to selectively press and release the rocker arm shaft (1).

[0052] In the inner diameter inspection unit (70) configured as above, when the rocker arm shaft (1) that has passed through the first and second finishing units (50, 60) is transported by the transport unit (30), the air gauge (74) is positioned so that it is inserted to a predetermined depth at each end of the rocker arm shaft (1) by the operation of the transport unit (72), and in this state, compressed air is sprayed through the air gauge (74) so ​​that the inner diameter of the rocker arm shaft (1) is precisely measured.

[0053] At this time, the air gauge (74) measures how much air is discharged over a certain period of time by spraying compressed air at a constant pressure onto the inner surface of the rocker arm shaft (1) to detect minute dimensional changes in the inner diameter, and once the inner diameter is measured precisely in this way, the measured result is transmitted to the control unit (120) described later so that the defect is automatically determined.

[0054] In addition, while the inner diameter inspection is being performed through the air gauge (74), the guide block (77) is lowered to a predetermined height by the lifting cylinder (76) so that the rocker arm shaft (1) does not move arbitrarily, and thereby the rocker arm shaft (1) is fixed in a pressurized state while the inner diameter inspection is being performed.

[0055] The full length inspection unit (80) is installed on the upper part of the frame unit (10) and is configured to inspect the full length (length) of the rocker arm shaft (1) that is transported through the transport unit (30) and passes through the inner diameter inspection unit (70).

[0056] As shown in FIG. 10, the electrical inspection unit (80) includes a mounting base (81) installed on a guide plate (11) on one side to have a predetermined length in the horizontal direction, a transfer cylinder (82) of a predetermined length installed on the upper surface of the mounting base (81) to have a predetermined length and reciprocating in the axial direction of the rocker arm shaft (1), a pin guide (83) of a predetermined size installed on the transfer cylinder (82) to reciprocate in the horizontal direction, and an electrical inspection pin (84) having one end inserted into the pin guide (83) and elastically supported, with the other end protruding a predetermined length toward one end of the rocker arm shaft (1).

[0057] And on the other guide plate (11), a stopper (not shown in the drawing) is installed to restrict positional movement so that the rocker arm shaft (1) seated on the mounting plate (12) does not move in the axial direction due to the pressure of the electrical inspection pin (84).

[0058] The electrical inspection unit (80) configured as described above is positioned so that the electrical inspection pin (84) touches one end of the rocker arm shaft (1) transported by the transport unit (30) by the transport cylinder (82), thereby measuring the distance between the stopper and the electrical inspection pin (84). The electrical information measured in this way is transmitted to the control unit (120), and through the control unit (120), the defect is automatically determined according to the error range of the electrical length of the rocker arm shaft (1).

[0059] The foreign matter removal unit (90) is installed on the upper part of the frame unit (10) and is configured to remove foreign matter inside the axial hole of the rocker arm shaft (1) that has been transported through the transport unit (30) and passed through the electrical inspection unit (80) using high-pressure air.

[0060] As shown in FIG. 11, the foreign matter removal unit (90) includes an installation block (91) of a predetermined size installed on a guide plate (11) on one side, a transfer cylinder (92) of a predetermined length installed on the upper surface of the installation block (91) and installed to move horizontally in the axial direction of the rocker arm shaft (1), a fixed block (93) of a predetermined size installed on the transfer cylinder (92) and moved in the horizontal direction, and an air supply pipe (94) of a predetermined length installed on the fixed block (93) and inserted to a predetermined depth into a hole at one end of the rocker arm shaft (1).

[0061] And on the other side guide plate (11), an air discharge pipe (95) of a predetermined size is installed so that foreign matter and compressed air are collected and discharged through the hole at the other end of the rocker arm shaft (1).

[0062] When the rocker arm shaft (1) is positioned through the configuration of the foreign substance removal unit (90) as described above, high-pressure compressed air is supplied as the air supply pipe (94) is inserted to a predetermined depth into the hole at one end of the rocker arm shaft (1) by the transfer cylinder (92), and in this process, the compressed air and foreign substances discharged from inside the rocker arm shaft (1) are collected in a separate collection unit (not shown) through the air discharge pipe (95) or discharged to the outside.

[0063] The sorting unit (100) is provided on the upper side of the frame unit (10) and is configured to sort out defective rocker arm shafts (1) that have passed through the foreign matter removal unit (90) and separate and discharge them through a different path from the discharge unit (110) described later.

[0064] As shown in FIGS. 2 and FIGS. 12, the sorting unit (100) includes a transfer cylinder (101) of a predetermined length installed on one side of a guide plate (11) and having a predetermined length in the axial direction of a rocker arm shaft (1), a linear guide (102) installed on the upper surface of the transfer cylinder (101) and having a predetermined length along the length, and a pressure rod (103) of a predetermined diameter installed on a transfer block (102A) of the linear guide (102) and having a predetermined length in the axial direction of a rocker arm shaft (1).

[0065] In the sorting unit (100) configured as described above, when a rocker arm shaft (1) that has been determined to be defective is transported and positioned through the transport unit (30) by the control unit (120), the transport block (102A) is transported by the transport cylinder (101) and the pressure rod (103) pushes the rocker arm shaft (1) that has been determined to be defective to the other side of the guide plate (11) (the direction in which the sorting unit (100) is not installed), and thereby it is separated and collected in a collection container (not shown in the drawing) provided on the other side of the guide plate (11).

[0066] The discharge section (110) is provided on the other side of the frame section (10) and is configured to discharge a good quality rocker arm shaft (1) that passes through without being separated and discharged through the sorting section (100).

[0067] As shown in FIGS. 1 and 2, the discharge section (110) is installed such that the other end is inclined downward at a predetermined angle compared to the end adjacent to the sorting section (100), and thus the rocker arm shaft (1) passing through the sorting section (100) can be configured to move naturally along the inclined surface and be loaded in sequence.

[0068] Alternatively, the rocker arm shaft (1) that has passed through the sorting section (100) may be configured to be discharged toward a separate transfer device so as to be transferred to a subsequent process.

[0069] The control unit (120) controls the operation of the supply unit (20), transfer unit (30), position alignment unit (40), first finishing unit (50), second finishing unit (60), inner diameter inspection unit (70), electrical inspection unit (80), foreign matter removal unit (90), and sorting unit (100), and simultaneously determines whether the rocker arm shaft (1) is defective based on the inspection results of the inner diameter inspection unit (70) and electrical inspection unit (80), and thereby controls the operation of the sorting unit (100) to automatically separate and discharge defective products.

[0070] In this control unit (120), the inspection quantity (quantity of good and defective products) of the rocker arm shaft (1) is automatically counted, and in the case of defective products, the specific reason for the defect, such as inner diameter defect, electrical length defect, tap hole defect, etc., is classified and counted, and thus the cause of the defect occurring during the production process of the rocker arm shaft (1) can be easily identified and addressed.

[0071] Additionally, the control unit (120) may be configured to include a database in which inspection data regarding defects is stored, and to set error values ​​for inner diameter error and overall length error, and to output real-time status information for each component through a display.

[0072] As explained above, in the present invention, once a rocker arm shaft having a predetermined length is sequentially supplied to a conveying unit through a supply unit, the first and second finishing processes, full length inspection, inner diameter inspection, washing, and sorting processes are automatically carried out during the process of sequentially moving at predetermined intervals by the conveying unit, thereby reducing the time and manpower required for the work relatively compared to performing finishing and inspection manually, while improving the accuracy of the finishing and inspection work.

[0073] For the convenience of explanation, drawings illustrating preferred embodiments and configurations shown in the drawings have been described above using reference numerals and names; however, as this is merely one embodiment according to the present invention, the scope of the rights should not be interpreted as being limited to the shapes shown in the drawings and the names assigned thereto. It is considered entirely obvious that modifications to various shapes predictable from the description of the invention and simple substitutions with configurations having the same function fall within the scope of modifications that a person skilled in the art can easily implement. Explanation of the symbols

[0074] 1: Rocker arm shaft 10: Frame part 11: Guide plate 12: Seating plate 20: Supply part 21: Main body 22: Supply plate 23: Support plate 23A: First support plate 23B: Second support plate 23C: Third support plate 23D: Fourth support plate 24: Lifting plate 24A: First lifting plate 24B: Second lifting plate 24C: Third lifting plate 25: Air cylinder 26: Discharge plate 30: Transfer part 31: Linear guide 31A: Transfer block 32: Transfer guide 32A: Bottom plate 32B: Side plate 32C: Linear guide 32D: Transfer block 32E: Connecting rod 33: Lifting cylinder 34: Transfer plate 34A: Seating groove 35: Servo motor 40: Position alignment part 41: First transfer cylinder 42: Servo motor 43: Air clamp 44: Second transfer cylinder 45: Guide pin 50: First finishing unit 51: Base plate 52: Linear guide 52A: Transfer block 53: Motor 54: Drill bit 60: Second finishing unit 61: Vertical plate 62: First cylinder 63: Linear guide 64: Second cylinder 65: Fixing bracket 65A: Drill pin 70: Inner diameter inspection unit 71: Fixing plate 72: Transfer unit 73: Installation block 74: Air gauge 75: Support plate 76: Lifting cylinder 77: Guide block 80: Electrical length inspection unit 81: Mounting stand 82: Transfer cylinder 83: Pin guide 84: Electrical length inspection pin 90: Foreign matter removal unit 91: Installation block 92: Transfer cylinder 93: Fixing block 94: Air supply pipe 95: Air discharge pipe 100: Sorting section 101: Transfer cylinder 102: Linear guide 102A: Transfer block 103: Pressure rod 110: Discharge section 120: Control section

Claims

Claim 1 A square box-shaped frame part (10) having a predetermined size; a supply part (20) located on one side of the frame part (10) for sequentially supplying a rocker arm shaft (1); a transfer part (30) installed horizontally along the length on the upper part of the frame part (10) for transferring the rocker arm shaft (1) supplied through the supply part (20) in units of a predetermined distance; a position alignment part (40) installed on one side of the upper part of the frame part (10) for aligning the position of the rocker arm shaft (1) transferred through the transfer part (30); a first finishing part (50) installed at a predetermined distance from one side of the position alignment part (40) for finishing the inner diameter of the axial hole of the rocker arm shaft (1) transferred in units of a predetermined distance through the transfer part (30); and the axis of the rocker arm shaft (1) installed at a predetermined distance from the upper part of the transfer part (30) in accordance with the position of the first finishing part (50). A second finishing unit (60) for finishing the inner diameter of a hole in a right-angle direction; an inner diameter inspection unit (70) installed on the upper part of the frame unit (10) and transported through the transport unit (30) to inspect the axial inner diameter of the rocker arm shaft (1) that has passed through the first and second finishing units (50, 60); an overall length inspection unit (80) installed on the upper part of the frame unit (10) and transported through the transport unit (30) to inspect the overall length of the rocker arm shaft (1) that has passed through the inner diameter inspection unit (70); a foreign matter removal unit (90) installed on the upper part of the frame unit (10) and transported through the transport unit (30) to remove foreign matter inside the axial hole of the rocker arm shaft (1) using high-pressure air; and among the rocker arm shafts (1) that have passed through the foreign matter removal unit (90) provided on the other side of the upper part of the frame unit (10). A sorting unit (100) for sorting and discharging defective parts; a discharge unit (110) provided on the other side of the frame unit (10) and through which the rocker arm shaft (1) of a good product that has passed through the sorting unit (100) is discharged;A rocker arm shaft automatic finishing and inspection device comprising: a control unit (120) that controls the operation of the supply unit (20), transfer unit (30), position alignment unit (40), first finishing unit (50), second finishing unit (60), inner diameter inspection unit (70), full length inspection unit (80), foreign matter removal unit (90), and sorting unit (100); wherein the finishing processing of the axial hole and the hole perpendicular to the axis of the rocker arm shaft (1) and the inner diameter inspection of the full length and the axial hole of the rocker arm shaft (1) are performed sequentially. Claim 2 The rocker arm shaft automatic finishing and inspection device according to claim 1, wherein the first finishing member (50) is installed such that two members, one each at each end portion based on the rocker arm shaft (1), face each other. Claim 3 The automatic finishing and inspection device for a rocker arm shaft according to claim 1, wherein the first finishing section (50) is installed such that four sections, two at each end of the rocker arm shaft (1), face each other, so that the axial inner diameter of the rocker arm shaft (1) is finished in two stages. Claim 4 In any one of claims 1 to 3, the supply unit (20) comprises: a main body (21) having a predetermined size; a supply plate (22) installed on one side of the main body (21) with one end inclined downward at a predetermined angle; a plurality of support plates (23) installed on the main body (21) and positioned on one end of the supply plate (22) to form a stepped step of a predetermined height; a plurality of lifting plates (24) installed between the plurality of support plates (23) to contact one side of the support plate (23) and moving up and down to a predetermined height to sequentially raise the rocker arm shaft (1) located on one end of the supply plate (22); and an air cylinder (25) installed inside the main body (21) to raise and lower the lifting plate (24). A rocker arm shaft automatic finishing and inspection device characterized by including: a discharge plate (26) provided on the upper other side of the main body (21) and discharging individual rocker arm shafts (1) that are raised stepwise along the support plate (23) through the lifting plate (24) toward the transfer unit (30).

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